多片离合器轴向平均比压的衰减特性  

Analysis and verification for average axial pressure attenuation of multi-disc clutch

作　　者：于亮[1] 李和言[1,2] 马彪 李慧珠[1,2] 李明阳 YU Liang;LI He-yan;MA Biao;LI Hui-zhu;LI Ming-yang(School of Mechanical Engineering,Beijing Institute of Technology,Beijing 100081,China;Collaborative Innovation Center of Electric Vehicles in Beijing,Beijing 100081,China)

机构地区：[1]北京理工大学机械与车辆学院,北京100081 [2]北京电动车辆协同创新中心,北京100081

出　　处：《吉林大学学报（工学版）》2018年第4期990-997,共8页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金项目(51575042);国家国防科技工业局基础产品创新科研项目(VTDP-3203)

摘　　要：以车辆多片离合器为研究对象,建立了考虑花键摩擦力的多摩擦副界面平均比压和转矩的计算模型,得到多摩擦副的比压衰减系数,对影响离合器比压衰减的参数进行了敏感度分析。研究表明:摩擦因数对比压衰减影响显著,界面摩擦因数越大,界面比压沿轴向衰减越快;键处摩擦因数越大,界面比压沿轴向衰减更快;花键压力角对界面比压衰减影响甚微。试验发现,摩擦副数越多,平均单副转矩越小,且总转矩增加幅度减小。通过仿真结果与试验数据的对比,验证了所建模型的有效性,该模型能够有效地反映离合器的实际比压和转矩特性。For multi-disc clutches,an analytical model of average interfacial pressure and torque is established with the effect of spline friction.The pressure attenuation coefficient of friction pairs is derived and the sensitivity is analyzed to investigate the parameters,which may affect the clutch pressure.The results show that the friction coefficient greatly influences the pressure attenuation.The axial pressure significantly attenuates with the increase in interfacial friction coefficient and spline friction coefficient.The effect of the spline friction coefficient is more obvious than the interfacial friction coefficient.The spline pressure angle has little influence on the axial pressure attenuation.It is found by experiment that with the increase in friction pairs,the average torque of single friction pair dramatically declines,and the increase amplitude of total torque decreases.The proposed model is verified effectively by the comparison of the simulated results and experiment data,and the model can better reflect the actual pressure and torque characteristics of the multi-disc clutch.

关 键 词：车辆工程 多片离合器 键摩擦 界面比压 转矩 

分 类 号：U463.2[机械工程—车辆工程]